fixed :background-color on Android crash

Signed-off-by: Andrey Shovkoplyas <motor4ik@gmail.com>

src/status_im/ui/components/button.cljs

@@ -20,13 +20,13 @@
     :align-items :center :justify-content :center
     :background-color (cond
                         (#{:secondary :next :previous} type)
-                        nil
+                        ""
                         disabled?
                         colors/gray-transparent-10
                         (= type :main)
                         colors/blue-transparent-10
                         :else
-                        nil)}))
+                        "")}))
 
 (defn button
 
@@ -61,7 +61,7 @@
                                      (#{:main :secondary :next :previous} type)
                                      colors/blue
                                      :else
-                                     nil)}}
+                                     "")}}
         label]
        (when (= type :next)
          [vector-icons/icon :main-icons/next {:container-style {:width 24 :height 24 :margin-left 4}

src/status_im/ui/screens/wallet/components/styles.cljs

@@ -104,7 +104,6 @@
 (defstyle container-disabled
   {:border-width     1
    :border-color     colors/white-transparent-10
-   :background-color nil
    :border-radius    8})
 
 (def wallet-container

src/status_im/ui/screens/wallet/send/styles.cljs

@@ -7,26 +7,6 @@
   {:flex           1
    :padding-bottom 60})
 
-(defn animated-sign-panel [bottom-value]
-  {:position           :absolute
-   :left               12
-   :right              12
-   :bottom             bottom-value})
-
-(defn sign-panel [opacity-value]
-  {:opacity            opacity-value
-   :border-radius      8
-   :background-color   colors/white
-   :padding-top        12
-   :padding-horizontal 12})
-
-(def signing-phrase-container
-  {:border-radius    8
-   :height           36
-   :align-items      :center
-   :justify-content  :center
-   :background-color colors/gray-lighter})
-
 (def signing-phrase-description
   {:padding-top 8})
 
@@ -68,34 +48,10 @@
   {:flex-direction   :row
    :margin           15})
 
-(def transaction-fee-info-icon
-  {:border-radius    25
-   :width            25
-   :height           25
-   :margin-right     15
-   :align-items      :center
-   :justify-content  :center
-   :background-color colors/black-transparent})
-
-(def transaction-fee-info-icon-text
-  {:color            colors/white
-   :font-size        14})
-
 (def transaction-fee-input
   {:keyboard-type          :numeric
    :auto-capitalize        "none"
    :placeholder            "0.000"
    :placeholder-text-color colors/white-transparent
    :selection-color        colors/white
-   :style                  wallet.components.styles/text-input})
+   :style                  wallet.components.styles/text-input})
-
-(def sign-buttons
-  {:background-color colors/blue
-   :padding-vertical 8})
-
-(def password-error-tooltip
-  {:bottom-value 15
-   :color        colors/red-light})
-
-(defstyle gas-input-error-tooltip
-  {:android {:bottom-value -38}})